do u mean that the more u push ur pedal.. the louder the sounds go?

if it is, then ur amp is not properly grounded..

brooo.. this sound come out of a sudden o u haf installed something n this sound juz comes out..

plz tell us more about this...

go to those proper installer larhh.. u'll end up paying the same amount if u go to those professional installer... unless u DIY, then it's about the skill liao..

stock HU has limitation n i blif ur HU is running on "hi-lo" adapter (onli for those wif no RCA output)..

r u using ur amp to power all de stock speakers? if u r, then u may wanna change them too...

but plz make sure that u haf rectify the "hissle" problem 1st else u r wasting money..